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Fig. 13.

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Left: [C/N]-mass relation for the stars in our sample alongside with the α-rich APOKASC-3 distribution. The upper panel shows the stars classified as RGB and the lower panel shows the RC stars. The symbols follow our new classification based on the contours of Fig. 8. Binary stars are enclosed with squares. Middle and right panels: [C/Fe] and [N/Fe] abundances as a function of mass.

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